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Northwest Africa 11292
Basic information Name: Northwest Africa 11292
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11292
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 146 g
Meteoritical Bulletin:  MB 106  (2018)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 355 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 28 Jun 2017
Writeup from MB 106:

Northwest Africa 11292 (NWA 11292)

(Northwest Africa)

Purchased: 2016

Classification: HED achondrite (Eucrite, polymict)

History: One stone weighing 146 g was found and subsequently purchased from the finder in Agadir in 2016. Thomas Webb acquired the sample in 2016.

Physical characteristics: Physical Characteristics: Sample is an irregular-shaped fragment that is ~35% covered by a black fusion crust. The fusion crust contains contraction cracks and a few small areas with relict flow lines. The interior is dark-grey and displays a clastic texture composed of lithic and mineral fragments.

Petrography: Description and classification (A. Love, App): Sample is a breccia composed: of <=1 cm rounded to angular clasts with ophitic basaltic and cumulate textures with exsolved pyroxenes; vitrophyric textured melt clasts; brecciated clasts containing cumulate debris and 1mm clasts of exsolved pyroxenes that are crosscut by veins of fayalitic olivine (Fa84) and mineral fragments set within a fine-grained matrix of fragmental debris. Accessory minerals are Si polymorphs, ilmenite, FeS.

Geochemistry: (A. Love, App) Low-Ca pyroxene Fs65.5±2.8Wo2.1±-0.7 (Fs60.8-70.8Wo1.3-4.0, FeO/MnO=30.5-35.1, N=21); Pigeonite host Fs61.2±2.3Wo8.1±1.4 (Fs58.2-64.6Wo5.4-9.9, Fe/Mn=30.0-31.8, N=6); high-Ca pyroxene exsolution lamellae Fs35.2±3.7Wo38.5±5.9 (Fs32.1-42.2Wo27.0-44.4, FeO/MnO=33.0-34.8, N=12); plagioclase An90.7±2.3Or0.3 (An88.5-93.0, N=7); Fayalitic veins Fa84.3±0.3, N=6.

Classification: HED Achondrite (eucrite, polymict)

Specimens: Thomas Webb holds the 123.3 g main mass. A 21.1 g type specimen and one polished thin section are on deposit at App.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2016
Mass (g):146
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):60.8-70.8; 58.2-64.6; 32.1-42.2
Wollastonite (mol%):1.3-4.0; 5.4-9.9; 27.0-44.4
Classifier:A. Love, App
Type spec mass (g):21.1
Type spec location:App
Main mass:TWebb
Comments:Submitted by Anthony Love
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
TWebb: No contact information provided., United States (private address)
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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     This is 1 of 7810 approved meteorites from (Northwest Africa) (plus 1971 unapproved names)

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